body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

div.head {
    background-color: #7f99be;
    color: #f5f5f5;
    font-size: 18px;
    padding: 5px;
}

div.head p {
    display: inline;
    margin: 0px;
}

div.head p:first {
    float: left;
}

div.head p:last-child {
    float: right;
}

div.head p a:visited {
    color: #f5f5f5;
}

div.border {
    padding: 3px 3px 0 3px;
    margin: 0;
}

div.content {
    width: 100%;
    height: calc(100vh - 100px);
    border: #3d5577 solid 1px;
    padding: 0px;
    
}

/*导航栏*/
button.accordion {
    background-color: #eee;
    color: #444;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
    transition: 0.4s;
}

button.accordion.active, button.accordion:hover {
    background-color: #ddd;
}

div.panel {
    padding: 0 18px;
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
}

/*iframe*/
div.nav{
    float: left;
    width: 150px;
    height: 100%;
    border:#0e7caf solid 1px;
    margin-right: 3px;
}
iframe{
    width: calc(100% - 160px);
    height: 100%;

}


/*底部*/
div.footer {
    width: 100%;
    height: 23px;
    background-color: #d3e0fe;
    color: #051d3f;
    line-height: 16px;
    padding: 3px;
    margin-top: 3px;
    text-align: center;
    border: #7f99be solid 1px;

}

div.footer>div.img{
    margin-top: 8px;
}

.hidden{
    position: absolute;
    display: none;
}